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Oracle Linux 10 Dovecot Key Denial of Service Update ELSA-2026-13499

oracle
Calendar Grey May 6, 2026
Oracle Linux Logo Esm H88
Updated RPMs for Oracle Linux 10 provide important fixes for Dovecot, addressing potential denial of service issues.
The following updated rpms for Oracle Linux 10 have been uploaded to the Unbreakable Linux Network:

Summary

[1:2.3.21-16.1] - fix CVE-2026-27858: denial of service via crafted message before authentication (RHEL-161625) - fix CVE-2025-59032: ManageSieve: Denial of Service via crafted SASL initial response in AUTHENTICATE command (RHEL-162273) - fix CVE-2026-27857: denial of service via specially crafted NOOP command (RHEL-161664)

Topics%20covered

Topics Covered

security advisory denial of service software update important Dovecot Oracle Linux

SRPMs

http://oss.oracle.com/ol10/SRPMS-updates/dovecot-2.3.21-16.el10_1.1.src.rpm

x86_64

dovecot-2.3.21-16.el10_1.1.x86_64.rpm dovecot-devel-2.3.21-16.el10_1.1.x86_64.rpm dovecot-mysql-2.3.21-16.el10_1.1.x86_64.rpm dovecot-pgsql-2.3.21-16.el10_1.1.x86_64.rpm dovecot-pigeonhole-2.3.21-16.el10_1.1.x86_64.rpm

aarch64

dovecot-2.3.21-16.el10_1.1.aarch64.rpm dovecot-devel-2.3.21-16.el10_1.1.aarch64.rpm dovecot-mysql-2.3.21-16.el10_1.1.aarch64.rpm dovecot-pgsql-2.3.21-16.el10_1.1.aarch64.rpm dovecot-pigeonhole-2.3.21-16.el10_1.1.aarch64.rpm

Severity
important
Lowest
Low
Medium
High
Critical

Related CVEs: CVE-2025-59032 CVE-2026-27857 CVE-2026-27858

Topics%20covered

Topics Covered

security advisory denial of service software update important Dovecot Oracle Linux

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